Milk-can cover.



THOMAS BRAY, OF ARLINGTON HEIGHTS, ILLINOIS, ASSIGNOR 'IO'BRAY & KTES,OF

i ARLINGTON HEIGHTS, ILLINOIS, A VFIRM.

IVIILK-GAN COVER.

Specification of Letters Patent.

Patentedl March 23, 1909.

Application filed January `13, 1908. Serial No. 410,577..

To alt whom fait may concern.'

Be it known that I, TnoMAs BRAY, a citizen of the United States,residing at Arlington Heights, in the county of Cook and State ofIllinois", have invented certain new and useful Innnovemcnts inltlillvCan Covers, of which the following is a specification,re'r'erence being had to the accompanying drawings.

"lhis invention relates to covers for cans, preferably, milla-cans andhas for its object to provide a construction wherein the usual diaphragmor plate that lies within the main or body )ortion of the cover will besccurel)Y held in place. l

' The article produced .is theI result ol one suitable method ofmanufacture hereinafter described, the various steps tahento produce thecompleted cover heilig illustrated in the accompanying drawing.

Figure l is a central, vertical section illustrating the initial step inthe manufacture ot the cover, the sheet of metal being drawn to the formthere. shown. Fig. 2 is a similar View after the bottom shown in Fig. 1has been cut out. i"ig. 3 is a similar View showing the annular,inwardly projectingl rib or head upon which the cut. out bottom is toresi. Fig. 4 is a similar view showing said cu't out bottom resting uponsaid rib or bead. i

Fig. 5 shows the cover confined .in position by a second annular rib orbead, and Fig. 6 is a similar view of the completed article.

ln the making ol" my improved cover a sheet of metal is drawn in theordinary way.

into the form shown in Fig. l, there being thus produced a liar-ingportion a, a cylindrical portion .7) and a bottom c. The next step inthe operation is to cut out the entire bottom c, as shown in Fig. 2,which is done at a single operation by anbrdinary cutting die.liollowing such remval of the bottom the cylindrical part t has formedon its exterior an annular groove, fas clearly shown in Fig. 3, whichnecessarily produces an .interiorlyprojecting rib, or bead, indicated byd. After the formation of such rib or beadda dia hra m or plate of asize and shape to fit wit in t 1e cylindrical part b is placed in suchpart so as to come against and rest -upon said rib or bead d, as 4shownin Fig. 4. The bottom piece cvhereinbefore referred to mayjbe employedfor such diaplhragm or plate, as itis Well adapted for suc use by reasonof its L Tins -dies.

diaphragm or plate so that such size and shape, but I do not wish to berestricted to the use of such bottom piece for this use, and as suchdiaphragm or plate may be cut from' some other )ieee of metal I havedesignated it by the letter e. After this diaphragm or plate has 'Jbeenplaced in osition a second interiorly-projecting ri or bead f is formedin the'cylindrical` portion l), said last-named Arib or bead beingsimilar to the first-formed rib or bead dr and solocated with referenceto the diaphragm or )late e as to hold such diaphragm or plate etween itand the said rib or bead d. This stage in the manufacture of the c'overis shown by Fig. 5. The next and -inal, step is to press the two ribs orbeaded and f toward e'ach other, which is best donc by suitable Thispressing of the ribs or beads'toward each other causes them to griptightly between them the entire edge portion ol the diaphragm or pla-tcis heh locked immovably in place, as shown in Fig. 6. y After thediaphragm or plate is thus secured in place, th'e cover as a whole willordinaril)r be subjected to a tin'- ning bath, during which any littlespaces that may exist between the ribs' or beads and Ithe diaphragm orplate will become filled,

rendering the joint an absolut-ely tight and perfect one.

I have not shown any handle in connection with the cover, but it will beunderstood that a suitable handle may be applied in any well-knownmanner. Y

That which I claim as my invention and desire to secure by LettersPatent, is,-.

1. A sheet-metal cylinder, in combination with a diaphragm or plateitting therein and held in place by two interiorly-projecting ribs orbeads formed integral with said cylinder, between which rib's or beadssaid diaphragm or plate projects. i

2. A sheet-metal cylinder, inico/iiibinaticiin f with a diaphragm orplate itting therein and held in place by two interiorly projecting ribsor beads formed integral with said cylinder, between which ribs or beadssaid diaphragm or plate projects, said vribs or beadfsj being compressed`against. said diaphragm.

frHoMAs BRAY.

Witnesses:

ANTHONY T KATEs SRAH PRocToR.

